Foldable Display Hinge Structure to Prevent Screen Creasing
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Solution Overview
Problem
Foldable electronic devices suffer from damage to flexible screens due to excessive squeezing or stretching during folding and unfolding, leading to a shortened service life.
Innovation Solution
The electronic device incorporates a first device body, a second device body, a flexible display screen, a shaft assembly, a first transmission member, and a first mounting bracket, allowing for controlled movement and rotation of the device bodies to accommodate deformation, thereby protecting the flexible display screen from excessive stretching or squeezing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the foldable electronic device is folded inward with a small bending radius at the hinge, then the device can be compactly stored, but the flexible screen is prone to creases or damage due to excessive squeezing
Solution Approach 1:
The flexible screen is divided into multiple segments including a first flexible screen portion, a second flexible screen portion, and a third flexible screen portion. The third portion acts as a buffer zone that can deform independently to absorb squeezing stresses during folding, preventing damage to the primary display areas while enabling compact storage.
2Reliability
If the foldable electronic device is folded outward with a large bending radius at the hinge, then the flexible screen can maintain its structure, but the flexible screen is prone to deformation and even cracking due to excessive stretching
Solution Approach 1:
The flexible screen structure is designed to be dynamic rather than rigid, allowing the third flexible screen portion to change shape and configuration during folding operations. This dynamic adaptation enables the screen to accommodate large bending radii during outward folding without excessive stretching or cracking.
3Shape
If the flexible screen is made more rigid to prevent deformation, then the screen can maintain its shape, but the screen becomes more prone to damage during folding operations
Solution Approach 1:
Different portions of the flexible screen have different mechanical properties. The first and second flexible screen portions maintain higher rigidity for stable display, while the third flexible screen portion has enhanced flexibility to accommodate deformation during folding. This local differentiation allows shape stability where needed while preventing damage through localized flexibility.
Data Source
AI summary
An electronic device includes a first device body, a second device body, a flexible display screen, a shaft assembly, a first transmission member, and a first mounting bracket. The first mounting bracket is rotatably connected to the shaft assembly, the first device body is slidably matched with the first mounting bracket, and the second device body is connected to the shaft assembly. The flexible display screen includes a first display screen disposed on the first device body, a second display screen disposed on the second device body, and a third display screen that connects the first display screen to the second display screen. The first transmission member is rotatably matched with the first mounting bracket, and the first transmission member is connected to the shaft assembly and the first device body.